为什么我在 laravel 5.3 中更新 Composer 时出错？

Question

problem 1
    - Installation request for laravel/framework v5.3.18 -> satisfiable by laravel/framework[v5.3.18].
    - laravel/framework v5.3.18 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
  Problem 2
    - Installation request for phpunit/phpunit 5.6.1 -> satisfiable by phpunit/phpunit[5.6.1].
    - phpunit/phpunit 5.6.1 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.

要启用扩展，请确认它们在这些 .ini 文件中已启用： - /etc/php/7.0/cli/php.ini - /etc/php/7.0/cli/conf.d/10-opcache.ini - /etc/php/7.0/cli/conf.d/10-pdo.ini - /etc/php/7.0/cli/conf.d/15-xml.ini - /etc/php/7.0/cli/conf.d/20-calendar.ini

Answer 1

您的 php 没有安装 mbstring。

如果您可以访问服务器，并且是 Linux 服务器，则可以使用

安装它

sudo apt-get install php-mbstring

希望对您有所帮助。

为什么我在 laravel 5.3 中更新 Composer 时出错？

Why i am Getting error, while update Composer in laravel 5.3?

php

laravel-5.3